Heshmat, H. and Walton II, J.F., “On the Integration of Hot Foil Bearings into Gas Turbine Engines: Theoretical Treatment.” ASME Turbo Expo Technical Conference Proceedings (2019). http://doi.org/10.1115/GT2019-91710 To achieve high power density Gas Turbine Engines (GTEs), R&D efforts have strived to develop machines that spin faster and run hotter. One method to achieve that goal […]
Project Tag: Gas Turbine and Diesel Engines
Ultra-High Temperature Compliant Foil Bearings – The Journey to 870°C and Application in Gas Turbine Engines: Experiment
Heshmat, H., Walton II, J.F. and Nicholson, B.D., “Ultra-High Temperature Compliant Foil Bearings – The Journey to 870°C and Application in Gas Turbine Engines: Experiment.” ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition Proceedings (2018). http://doi.org/10.1115/GT2018-75555 In this paper, the authors present the results of recent developments demonstrating that ultra-high temperature compliant foil bearings […]
Oil-Free 8 KW High-Speed and High Specific Power Turbogenerator
Heshmat, H., Walton II, J.F., and Hunsberger, A.Z. “Oil-Free 8 KW High-Speed and High Specific Power Turbogenerator” GT2014-27306, Proceedings of the ASME Turbo Expo 2014: Power for Land, Sea and Air, June 16-20, 2014, Dusseldorf, Germany. In the paper the authors will present the design and preliminary test results for a high specific power (i.e., […]
Structural Dynamic Design of a Rotating Hydrogen Co-Fired Multi-Fuel External Combustor
Heshmat, H., Walton II, J.F., Tomaszewski, M.J. and Potgieter, D.J. “Structural Dynamic Design of a Rotating Hydrogen Co-Fired Multi-Fuel External Combustor” Proceedings of ASME Turbo Expo 2010: Power for Land, Sea and Air, June 14-18, 2010, Glasgow, UK.
Small Gas Turbine Engine Operating with High-Temperature Foil Bearings
Hooshang, H., Tomaszewski, M. and Walton II, J.F. “Small Gas Turbine Engine Operating with High-Temperature Foil Bearings,” ASME Paper GT2006-90791, ASME Power for Land, Sea and Air, May 2006, Barcelona, Spain, (2006) Proceedings of the ASME Turbo Expo, Volume 5 (PART A), pp. 387-393. A 134 Newton thrust class, 120,000 rpm turbojet was redesigned to […]
Small Gas Turbine Engine Operating With High-Temperature Foil Bearings
Heshmat, H., Tomaszewski, M., and Walton J. F.,”Small Gas Turbine Engine Operating With High-Temperature Foil Bearings,” Paper GT2006-90791, presented at the International Gas Turbine Institute Turbo Expo Conference, Barcelona, Spain, May 2006
Principles of Gas Turbine Bearing Lubrication and Design
Heshmat, H. and Walton II, J.F. “Principles of Gas Turbine Bearing Lubrication and Design,” Chapter 7 in the “Handbook of Lubrication and Tribology”, Volume I, Application and Maintenance, Second Edition. Sponsored by the STLE and published in June 2006 by CRC Press, Taylor & Francis Group.
A Turbojet Engine Demonstration with Air Foil Bearing
Heshmat, Hooshang, Walton, James F. II, Tomaszewski, Michael J., Cruzen, G. Scott and Rabe, Lavern, “A Turbojet Engine Demonstration with Air Foil Bearing,” Presented at the UVS Tech 2003, Royal Military Academy, Brussels, Belgium, December 3-5, 2003
Foil Bearings Make Oil-Free Turbocharger Possible
Heshmat, H., Heshmat, C., Valco, M.J., Radil, K.C. and Della Corte, C. “Foil Bearings Make Oil-Free Turbocharger Possible,” ASME Paper WTC2005-63724, ASME WTC 2005, September 12-16, 2005, Washington D.C., (2005) Proceedings of the World Tribology Congress III – 2005, pp. 113-114. This paper describes an oil-free, 150 Hp turbocharger that was successfully operated with compliant […]
Demonstration of a Turbojet Engine Using an Air Foil Bearing
Heshmat, H., Walton J. F. and Tomaszewski, M., “Demonstration of a Turbojet Engine Using an Air Foil Bearing,”Paper GT2005-68404 presented at ASME Turbo Expo, Land, Sea and Air, International Gas Turbine Conference, Reno, NV June 6-9, 2005 Selected for ASME 2005 IGTI Vehicular & Small Turbomachines Committee Best Paper Award
Tribological Limitations in Gas Turbine Engines: A Workshop to Identify the Challenges and Set Future Direction
Della Corte, C., Pinkus, O. and Heshmat, H. “Tribological Limitations in Gas Turbine Engines: A Workshop to Identify the Challenges and Set Future Direction,” ASME Turbo Expo, June 3-6, 2002, Amsterdam, The Netherlands, (2002) ASME Publication TRIB-Volume 12. A Workshop cosponsored by NASA (Glenn Research Center), ASME (Tribology Division) and industry (Industrial Tribology Institute and […]
A Test Stand for Dynamic Characterization of Oil-Free Bearings for Modern Gas Turbine Engines
Swanson, E., Walton, J.F., Heshmat, H., “A Test Stand for Dynamic Characterization of Oil-Free Bearings for Modern Gas Turbine Engines,” Paper 2002-GT-30005 presented at ASME Turbo Expo, Land, Sea and Air, International Gas Turbine Conference, Amsterdam, Netherlands June 2002
A Test Stand for Dynamic Characterization of Oil-Free Bearings for Modern Gas Turbine Engines
Swanson, E.E., Walton II, J.F. and Heshmat, H. “A Test Stand for Dynamic Characterization of Oil-Free Bearings for Modern Gas Turbine Engines,” ASME Paper GT2002-30005, 2002 ASME Turbo Expo: Land, Sea and Air, June 2002, Amsterdam, The Netherlands, (2002) American Society of Mechanical Engineers, International Gas Turbine Institute, Turbo Expo (Publication) IGTI, Volume 1, pp. […]
A Gas Turbine Engine Backup Bearing Operating Beyond 2.5 Million DN
Swanson, E., Walton, J.F., and Heshmat, H., “A Gas Turbine Engine Backup Bearing Operating Beyond 2.5 Million DN,” Paper 2000-GT-0622, presented at ASME Turbo Expo, Land, Sea and Air, 2000 Conference, Munich, Germany, May 8-11, 2000.
Oil Free Turbocharger Demonstration Paves Way to Gas Turbine Engine Applications
Heshmat, H., Walton, J.F., DellaCorte, C. and Valco, M.J., “Oil Free Turbocharger Demonstration Paves Way to Gas Turbine Engine Applications” Paper 2000-GT-0620, presented at ASME Turbo Expo, Land, Sea and Air, International Gas Turbine Conference, Munich, Germany, May 8-11, 2000.
Tribological Limitations in Gas Turbine Engines – A Workshop to Identify the Challenges and Set Future Directions
Della Corte, C., Pinkus, O. and Heshmat, H. “Tribological Limitations in Gas Turbine Engines – A Workshop to Identify the Challenges and Set Future Directions,” Report No. NASA/TM – 2000-210059, Sponsored by NASA, ASME, ITI and MiTi, May 2000, (2002) American Society of Mechanical Engineers, Tribology Division, TRIB, Issue 12, pp. 1-62. A Workshop cosponsored […]
Auxiliary Bearings in Support of Magnetic Bearings for Turbine Engines
Walton, J.F., “Auxiliary Bearings in Support of Magnetic Bearings for Turbine Engines,” SAE Paper 1999-01-1392, Published in Proceedings of the 1999 SAE Aerospace Power Systems Conference, P-341, pp. 179-185, April 6-9, 1999, Mesa AZ Awarded 1999 SAE Charles M. Manly Memorial Medal.
Wear Reduction Systems for Coal-Fueled Diesel Engines – Part I: The Basics of Powder Lubrication
Heshmat, H. “Wear Reduction Systems for Coal-Fueled Diesel Engines – Part I: The Basics of Powder Lubrication,” 9th International Conference on Wear of Materials, April 1993, San Francisco, CA, (1993) Wear Elsevier Sequoia, 162-164 (pt A), pp. 508-517. The objective of this investigation is to resolve the problem of severe wear occurring in systems using […]
High-Temperature Powder-Lubricated Dampers for Gas Turbine Engines
Heshmat, H. and Walton II, J.F. “High-Temperature Powder-Lubricated Dampers for Gas Turbine Engines,” Paper No. 90-2048, AIAA/SAE/ASME 26th Joint Propulsion Conference Proceedings, July 1990, (1992) Journal of Propulsion and Power, Volume 8 (2), pp. 449-456. This paper presents a novel powder-lubricated rotor bearing system damper concept for use in high temperature, high-speed rotating machinery such […]